Startups

Security that keeps
pace with your team.

We investigate your code, verify vulnerabilities and prepare auto-fixes in new PRs so you can keep shipping at the same pace.

Connect repos Keep testing Auto-fixes as PRsNo dashboard to babysit.

Set it up once.
Then get back to building.

Every investigation
builds on the last.

Context about your code, architecture and past findings carries into the next investigation. As your software changes, that context helps guide what to test next.

Your environment informs every investigationCode, architecture and past findings feed a shared context. That context guides the next investigation, whose findings carry forward into future work.Your codeArchitecturePast findingsYour project contextUpdated as your software changes.Next investigationNew findings inform the next run.

We are in the cyber programs of

Anthropic
Cyber Verification Program

OpenAI Daybreak
Trusted Access for Cyber

Microsoft
Security Advisor

Security grounded
in research.

We find novel vulnerabilities in real software and work with maintainers on fixes. You can read the public evidence.

Engineers at these companies deployed our fixes into their software.

CriticalRX buffer overflow on zero-length serial framesLinux kernel · mctp
CriticalArbitrary code execution via crafted expressionsjsonata
CriticalCross-tenant agent API-token minting@paperclipai/server
MediumAnonymous /api/systemstatus leaks exception detailSwiss Federal Chancellery · government code
HighSlab use-after-free in AEAD decrypt completionLinux kernel · TIPC
HighUse-after-free in MACsec offload RXLinux kernel · mlx5e

A few things worth knowing.

How does this fit our agent workflow?

Keep building with your coding agents. We run security reviews and pentests, verify findings and fixes, and open PRs for your engineers or agents to review.

What access does 0.security need?

We agree the repositories, systems and permissions with you before testing starts. We handle setup and connect the service to your existing workflow.

Talk to us
Who reviews and merges the fixes?

Your team does. We reproduce findings and test the fixes in isolated sandboxes, then deliver the evidence and proposed change together. Your engineers or coding agents review the PRs and decide what to merge.

Do we need to keep checking a dashboard?

No. Once we agree the scope, schedule and budget, we handle ongoing testing and deliver verified findings and fix PRs through your workflow. You don’t need to start scans or tests manually.

What can you test?

Your source code, dependencies, websites, APIs, apps, cloud infrastructure, operating systems and AI systems. The service includes PR reviews, codebase scans, secret checks, monitoring and white-box, grey-box and black-box pentesting. We tailor the testing to your stack.

Can you help with compliance reporting?

Yes. We provide testing evidence and reports for your SOC 2 and ISO 27001 work. We agree what you need to report as part of the engagement.

How do we get started?

Talk to us about your stack and priorities. We’ll agree the scope, schedule and budget, then handle setup and ongoing security testing.

Talk to us

Want to run it yourself? Explore the free, open-source harness.
You provide the models and infrastructure.

Tell us what your team needs.

We’re building the next generation of security products around real needs. Tell us what’s difficult today, what takes too much time, and what you wish worked better.

Talk to us